Fan for drying-machines



PaitentedAug. 31,1920.

I 272002010115 wwmm W. M. SCHWARTZ AND E. B. AYRES. FAN FOR DRYINGMACHINES. APPLICATION FILED FEB. 1, 192g.

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FAN FOR DRYING MACHINES.

APPLICATION FILED FEB. 7. 1920.

Patentfi Aug. 31, 192%.,

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unl a unn W. M. SCHWARTZ AND E. B. AYRES.

FAN FOR DRYING MACHINES.

APPLICATION FlLED FEB. z. 1920.

Patented Aug. 31, 1920.

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WALTER M. SCHWARTZ AND ELWOOID B. AYRES, or HI ADELP IA, rENNsYLvaNIa,

ASSIQNORS TO THE PHILADELPHIA TEXTILE MACHINERY coMPeNY, or PHILA-DELPHIA, PENNSYLVANIA, A CORPORATION or rENNsYLvaNra.

FAN roe. DRYING-MACHINES.

To all whom it may concern:

Be it known that we, IVALTER M- SCHWARTZ and Enwoon B. Areas, citizensof the United States, residing inv Philadelphia, Pennsylvania, haveinvented certain Improvements in Fans for Drying-Hachines, of which thefollowing is a specification.

One object of our invention is to construct a drying apparatus in whichthe fan shafts are arranged vertically and the bearings for the shaftsare located below the fans.

A further object of theinvention is to construct a drying apparatus inwhich the fans are located on vertical shafts and the bearings and thegearing for each shaft are located in alongitudinal tunnel protectedfrom the heat of the casing.

A still further object of the invention is to make the sides of thetunnel movable in order that access be had to the gear casings and thebearings for the shafts.

In the accompanying drawings:.

Figure 1 is a transverse sectional view through the drying apparatusillustrating our invention;

Fig. 2 is a plan view partly broken away;

Fig. 3 is an enlarged sectional view illustrating the upper and lowerbearings for one of the fan shafts and the side walls of the tunnelturnedback on their hinges, and

Figs. t and 5 are views of modifications.

1 is the casing of the drying apparatus. 2 are longitudinal dryingchambers. In these chambers are the carriers 3 for the material to bedried. These carriers are shown in diagram and may be of any formdesired and the number of chambers may vary. Located at the center ofthe casing is a heating and circulating chamber 4:. In the upper portionof this chamber are heating pipes 5 arranged in any manner desired. 6 isa longitudinal tunnel in the present instance directly below the heatingchamber 4:. 15 is a longitudinal driving shaft located in the tunnel 6.7 are vertical shafts arranged a given distance apart, and extendinginto the'heating chamber 4:. On the upper end of each vertical shaft inthe heating chamber is a fan 8 and each shaft is supported by a lowerbearing in a casing-9 and an upper bearing 10. These bearings arelocated in the tunnel and may be of any suitable construction.

In the present instance each of the eas- Specification of. Lettersratent. Patentgflifpup' 31, 192@ Application filed February 7, 1920.Serial No. 357,095. I

' ings 9 of the lower bearings'is secured to longitudinal .angle beams11 extending through the tunnel and --the longitudinal driving shaft 15is adapted to bearings in the casing 9, and is geared to each verticalshaft as shown in Fig. 3. Each of the bearings 9 and 10 containslubricant, in the present instance, and this lubricant should beprotected from the heat as much as possible,

as it not only lubricates the bearings, but also the gearing in thelower casing, thereforeboth bearings of each vertical shaft are locatedin the tunnel, and as this tunnel is preferably open at each endthere'is'a circulation of cool air therein.

- The walls 12 of the tunnel are inclined. in the present instance, andare hinged at the lower end 13 and bear upon a flanged plate 14 at theupper end which is preferably hinged at 16 to a fixed plate 17. When itis desired to enter the tunnel to reach one or more of the bearings, oneof the walls 12 can be pushed back, as shown in Fig. 3, so as to allowspace for a workman to make the necessary repairs or adjustments. Thisalso permits him to gain access to the fan 8,

which is above the plate 17 l/Vhen the Walls are down, as in Fig. 1, aircirculates through the central heating chambers and the side dryingchambers while the tunnel, in which the bearings for the fan shafts arelocated, is open at each end so as to allow a current of air to passthrough the tunnel and keep the bearings'cool.

Furthermore, by locating the hearings in the tunnel they are not exposedto the dust of a roof in which the drier is located;

In Fig. 1' we have illustrated a construction in which the walls 12 ofthe tunnel are fixed. This construction may be used where the drier isof sufiicient size to allow for a We claim l. The combination in adrier, of a drying tunnel; a longitudinal driving shaft eXtend- I mginto the tunnel; a series of vertical shafts geared to the longitudinaldriving 7 shaft; and a fan at the upper end of each vertical shaft, thebearings for each vertical 7 shaft and the bearings for the longitudlnalshaft being located in the tunnel. v

The combination in a drier, of a longitudinal tunnel in the lowerportion thereof; a heating chamber above the tunnel; a drying chamber atthe side thereof; a longitudinal shaft extending into the tunnel;

a series of vertical shafts geared to the longitudinal shaft andprojecting through the roof of the tunnel; a fan on each vertical shaftWithin the heating chamber, the bearings for the shaftsbeing located inthe tunnel, the side Walls of the tunnel being movable so that they canbe pushed back to allow sutficient space for a Workman to. pass into thetunnel. a l v V 1 4:. The combination in a drier, of a centrally locatedtunnel; a heating chamber above the tunnel; and drying chambers throughWhich the heated air circulates, said tunnel being open at both ends andhaving pivoted sidewalls which can be pushed back so that access can bereadily had to the interior tunnel, circulating means in the drier anddriving mechanism for the circulating means located in the tunnel.

5. The combination in a drier, of a heating chamber, a drying chamber,and a tunnel located in the lower portion of the drier, a driving shaftextending into the tunnel, a vertical fan shaft geared to the drivingshaft, said fan shaft extending through the roof of the tunnel and a fanon the upper end of said shaft to circulate air through the heatmg anddrying chambers, bearings for the vertical shaft located in the tunnel.

WALTER M. SCHWARTZ. ELWOOD B. AYRES.

